When performing a visual inspection:
Fill in the blanks:
Cables must be correctly selected for their application, ____ carrying capacity and volt-____.
- Current
- Drop
When performing a visual inspection:
True or false:
You should check that the accessories used are suitable for their purpose.
True.
Pretty obvious really.
When performing a visual inspection:
What must be checked when inspecting the protective & switching devices?
That they are correctly rated.
When performing a visual inspection:
True or false:
Damage can be ignored.
False.
Are you on beef?
When performing a visual inspection:
What must be checked regarding CPCs?
Assuming you are using twin & earth
That they are all correctly sleeved with green & yellow sleeving.
When performing a visual inspection:
Fill in the blanks:
All terminations must be ___ and ___ sound
- Mechanically
- Electrically
When performing a visual inspection:
True or false:
Signage and information need not concern you.
False. This must be correct and placed in the appropriate places.
Ya berk.
True or false:
You can use anything to perform a voltage test.
False.
A voltage test must be performed using a device which conforms to GS38.
You mad bitch.
When do electrical installations need to be inspected and tested?
Where would one find recommended timescales for this?
At appropriate intervals during its lifetime.
Recommended timescales can be found in IET Guidance Note 3 (supporting BS7671).
When inspecting an installation…
Regarding conductors, what must be inspected?
- The connection of conductors
- The identification of conductors
- That the selection of conductors is appropriate for carrying capacity and volt drop
When inspecting an installation…
Regarding connection, what must be inspected?
- Correct connection of single pole switching or protection devices: only in the line conductor
- Correct connection of accessories and equipment
When inspecting an installation…
What must be checked in regards to shock protection?
- Cable routing in safe zones
- General methods of protection against shock
- Ensuring protection against mechanical damage
When inspecting an installation…
What must be present in regards to protection against thermal effects?
- Fire barriers
- Suitable seals
- General protection against thermal effects
When inspecting an installation…
What must be present in regards to protective devices?
- Appropriate isolation and switching devices
- Presence of under voltage protection devices
- Appropriate selection of protective devices
- Appropraite labelling of said devices
- Proper warning & danger signs
When inspecting an installation…
What must be present in regards to access to information and equipment?
- Appropriate access to switching, isolation and switchgear equipment
- Diagrams, instructions and similar information must be accessible and clear
When inspecting an installation…
True or false:
You do not need to look at the connection of the conductors.
False.
This is pretty important.
theWhen inspecting an installation…
True or false:
You need to be able to identify the conductors.
True.
Pretty self explanatory really.
What is the width of a safe zone?
What is a safe zone?
The width of safe zones is 150mm.
Safe zones (or permitted zones) are areas where you are required to run cables through walls, as they are areas which aren’t as likely to be nailed or interfered with.
What is the minimum depth that cables must be run when installing cables in floors or ceilings?
More than 50mm.
Any less than this and the nail could potentially pierce the cable and it would become live.
